发明名称 |
METHOD FOR PRODUCTION OF SEAMLESS PIPE, IN PARTICULAR BY USE OF AN OXIDIZING GAS SUPPLY APPARATUS |
摘要 |
<p>A production method of a seamless pipe or tube according to the present invention comprises the steps of applying a lubricant containing carbon to a mandrel bar, producing a material pipe or tube with a mandrel mill using the mandrel bar to which the lubricant is applied, and reheating the material pipe or tube in a reheating furnace, wherein when a temperature of the material pipe or tube is 550°C or higher and 1000°C or lower in the reheating step, an oxidizing gas is fed into the material pipe or tube.</p> |
申请公布号 |
EP2002903(A2) |
申请公布日期 |
2008.12.17 |
申请号 |
EP20070739058 |
申请日期 |
2007.03.20 |
申请人 |
SUMITOMO METAL INDUSTRIES LIMITED |
发明人 |
NAKAIKE, KOUJI;HIDAKA, YASUYOSHI;NOGAMI, HIROSHI |
分类号 |
B21B17/02;B21B25/04;C21D1/70;C21D1/74;C21D9/08 |
主分类号 |
B21B17/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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